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Tuesday, September 26, 2023 at 12:20pm to 1:30pm
Clark Hall, 700 142 Sciences Drive
Emergent spacetime from generalized free fields
Holographic duality is the proposed correspondence between a quantum field theory and a gravitational theory with one higher dimension. This duality suggests that spacetime may emerge from quantum entanglement and correlation in many-body systems. In this work, we propose a new protocol to construct a dual free bulk theory using only data from a boundary model of generalized free fields (GFFs). This approach is doesn't rely on pre-defined bulk equations of motion; the bulk emerges organically from the boundary data. We apply this approach to the Sachdev-Ye-Kitaev (SYK) model and its variations, and study the dual geometry for the thermal state, thermal field double state and some time-dependent states. We find black hole geometry, shockwave geometries and tranversible wormholes, in consistency with the expectation at low energy. Our result enables the definition of dual geometry (at least at the two-point function level) beyond the low temperature, nearly conformal region. Our approach also provided new understanding on the universality of black hole horizon physics.
Ref: Tamra Nebabu and Xiaoliang Qi, arxiv:2306.16687
Xiaoliang Qi is the recepient of
Faculty Host: Chao-Ming Jian
Pizza served starting at 12:10 p.m.
Please bring your own beverage.